HTML Colours and Colour Values

HTML Colors

Colors are displayed combining RED, GREEN, and BLUE light sources.

Color Values
HTML colors can be defined as a hexadecimal notation for the combination of Red, Green, and Blue color values (RGB).
The lowest value that can be given to one light source is 0 (hex #00) and the highest value is 255 (hex #FF).
The table below shows the result of combining Red, Green, and Blue light sources:.
Color Color HEX Color RGB
#000000 rgb(0,0,0)
#FF0000 rgb(255,0,0)
#00FF00 rgb(0,255,0)
#0000FF rgb(0,0,255)
#FFFF00 rgb(255,255,0)
#00FFFF rgb(0,255,255)
#FF00FF rgb(255,0,255)
#C0C0C0 rgb(192,192,192)
#FFFFFF rgb(255,255,255)


W3C Standard Color Names
W3C has listed 16 color names that will validate with an HTML validator.
The color names are: aqua, black, blue, fuchsia, gray, green, lime, maroon, navy, olive, purple, red, silver, teal, white, and yellow.

Cross-browser Color Names
A collection of nearly 150 color names are supported by all major browsers.
View the cross-browser color names

Cross-browser Color Values
Some years ago, when most computers only supported 256 different colors, a list of 216 Web Safe Colors was suggested as a Web standard. The reason for this was that the Microsoft and Mac operating system used 40 different "reserved" fixed system colors (about 20 each).
We are not sure how important this is now, since most computers today have the ability to display millions of different colors, but the choice is left to you.
The 216 cross-browser color palette was created to ensure that all computers would display the colors correctly when running a 256 color palette:
000000 000033 000066 000099 0000CC 0000FF
003300 003333 003366 003399 0033CC 0033FF
006600 006633 006666 006699 0066CC 0066FF
009900 009933 009966 009999 0099CC 0099FF
00CC00 00CC33 00CC66 00CC99 00CCCC 00CCFF
00FF00 00FF33 00FF66 00FF99 00FFCC 00FFFF
330000 330033 330066 330099 3300CC 3300FF
333300 333333 333366 333399 3333CC 3333FF
336600 336633 336666 336699 3366CC 3366FF
339900 339933 339966 339999 3399CC 3399FF
33CC00 33CC33 33CC66 33CC99 33CCCC 33CCFF
33FF00 33FF33 33FF66 33FF99 33FFCC 33FFFF
660000 660033 660066 660099 6600CC 6600FF
663300 663333 663366 663399 6633CC 6633FF
666600 666633 666666 666699 6666CC 6666FF
669900 669933 669966 669999 6699CC 6699FF
66CC00 66CC33 66CC66 66CC99 66CCCC 66CCFF
66FF00 66FF33 66FF66 66FF99 66FFCC 66FFFF
990000 990033 990066 990099 9900CC 9900FF
993300 993333 993366 993399 9933CC 9933FF
996600 996633 996666 996699 9966CC 9966FF
999900 999933 999966 999999 9999CC 9999FF
99CC00 99CC33 99CC66 99CC99 99CCCC 99CCFF
99FF00 99FF33 99FF66 99FF99 99FFCC 99FFFF
CC0000 CC0033 CC0066 CC0099 CC00CC CC00FF
CC3300 CC3333 CC3366 CC3399 CC33CC CC33FF
CC6600 CC6633 CC6666 CC6699 CC66CC CC66FF
CC9900 CC9933 CC9966 CC9999 CC99CC CC99FF
CCCC00 CCCC33 CCCC66 CCCC99 CCCCCC CCCCFF
CCFF00 CCFF33 CCFF66 CCFF99 CCFFCC CCFFFF
FF0000 FF0033 FF0066 FF0099 FF00CC FF00FF
FF3300 FF3333 FF3366 FF3399 FF33CC FF33FF
FF6600 FF6633 FF6666 FF6699 FF66CC FF66FF
FF9900 FF9933 FF9966 FF9999 FF99CC FF99FF
FFCC00 FFCC33 FFCC66 FFCC99 FFCCCC FFCCFF
FFFF00 FFFF33 FFFF66 FFFF99 FFFFCC FFFFFF


HTML Colors Values.

Colors are displayed combining RED, GREEN, and BLUE light sources.

Color Values


HTML colors are defined using a hexadecimal notation for the combination of Red, Green, and Blue color values (RGB). The lowest value that can be given to one of the light sources is 0 (hex #00). The highest value is 255 (hex #FF).

Turn Off the Red
If you turn off the Red light completely, there are 65536 different combination of Green and Blue (256 x 256) to experiment with.
Click here to see some of these combinations of Green and Blue.

Turn On the Red
By setting the Red parameter to its maximum value, there are still 65536 different combination of Green and Blue (256 x 256) to experiment with.
Click here to see some of these combinations of Green and Blue.

16 Million Different Colors
The combination of Red, Green and Blue values from 0 to 255 gives a total of more than 16 million different colors to play with (256 x 256 x 256).
Most modern monitors are capable of displaying at least 16384 different colors.
If you look at the color table below, you will see the result of varying the red light from 0 to 255, while keeping the green and blue light at zero.
To see a full list of 16384 different colors based on red light varying from 0 to 255, click on one of the hexadecimal or rgb values below.
Red Light HEX RGB
#000000
rgb(0,0,0)

#080000
rgb(8,0,0)

#100000
rgb(16,0,0)

#180000
rgb(24,0,0)

#200000
rgb(32,0,0)

#280000
rgb(40,0,0)

#300000
rgb(48,0,0)

#380000
rgb(56,0,0)

#400000
rgb(64,0,0)

#480000
rgb(72,0,0)

#500000
rgb(80,0,0)

#580000
rgb(88,0,0)

#600000
rgb(96,0,0)

#680000
rgb(104,0,0)

#700000
rgb(112,0,0)

#780000
rgb(120,0,0)

#800000
rgb(128,0,0)

#880000
rgb(136,0,0)

#900000
rgb(144,0,0)

#980000
rgb(152,0,0)

#A00000
rgb(160,0,0)

#A80000
rgb(168,0,0)

#B00000
rgb(176,0,0)

#B80000
rgb(184,0,0)

#C00000
rgb(192,0,0)

#C80000
rgb(200,0,0)

#D00000
rgb(208,0,0)

#D80000
rgb(216,0,0)

#E00000
rgb(224,0,0)

#E80000
rgb(232,0,0)

#F00000
rgb(240,0,0)

#F80000
rgb(248,0,0)

#FF0000
rgb(255,0,0)



Shades of Gray
Gray colors are displayed using an equal amount of power to all of the light sources. To make it easier for you to select the right gray color we have compiled a table of gray shades for you:
RGB(0,0,0) #000000
RGB(8,8,8) #080808
RGB(16,16,16) #101010
RGB(24,24,24) #181818
RGB(32,32,32) #202020
RGB(40,40,40) #282828
RGB(48,48,48) #303030
RGB(56,56,56) #383838
RGB(64,64,64) #404040
RGB(72,72,72) #484848
RGB(80,80,80) #505050
RGB(88,88,88) #585858
RGB(96,96,96) #606060
RGB(104,104,104) #686868
RGB(112,112,112) #707070
RGB(120,120,120) #787878
RGB(128,128,128) #808080
RGB(136,136,136) #888888
RGB(144,144,144) #909090
RGB(152,152,152) #989898
RGB(160,160,160) #A0A0A0
RGB(168,168,168) #A8A8A8
RGB(176,176,176) #B0B0B0
RGB(184,184,184) #B8B8B8
RGB(192,192,192) #C0C0C0
RGB(200,200,200) #C8C8C8
RGB(208,208,208) #D0D0D0
RGB(216,216,216) #D8D8D8
RGB(224,224,224) #E0E0E0
RGB(232,232,232) #E8E8E8
RGB(240,240,240) #F0F0F0
RGB(248,248,248) #F8F8F8
RGB(255,255,255) #FFFFFF

Adding Images Using HTML

HTML Images

With HTML you can display images in a document.

Examples
Insert images
This example demonstrates how to display images in your Web page.
Insert images from different locations
This example demonstrates how to display images from another folder or another server in your Web page.
(You can find more examples at the bottom of this page)

The Image Tag and the Src Attribute
In HTML, images are defined with the tag.
The tag is empty, which means that it contains attributes only and it has no closing tag.
To display an image on a page, you need to use the src attribute. Src stands for "source". The value of the src attribute is the URL of the image you want to display on your page.
The syntax of defining an image:

The URL points to the location where the image is stored. An image named "boat.gif" located in the directory "images" on "www.w3schools.com" has the URL: http://www.w3schools.com/images/boat.gif.
The browser puts the image where the image tag occurs in the document. If you put an image tag between two paragraphs, the browser shows the first paragraph, then the image, and then the second paragraph.

The Alt Attribute
The alt attribute is used to define an "alternate text" for an image. The value of the alt attribute is an author-defined text:
Big Boat
The "alt" attribute tells the reader what he or she is missing on a page if the browser can't load images. The browser will then display the alternate text instead of the image. It is a good practice to include the "alt" attribute for each image on a page, to improve the display and usefulness of your document for people who have text-only browsers.

Basic Notes - Useful Tips
If an HTML file contains ten images - eleven files are required to display the page right. Loading images take time, so my best advice is: Use images carefully.

More Examples
Background image
This example demonstrates how to add a background image to an HTML page.
Aligning images
This example demonstrates how to align an image within the text.
Let the image float
This example demonstrates how to let an image float to the left or right of a paragraph.
Adjust images to different sizes
This example demonstrates how to adjust images to different sizes.
Display an alternate text for an image
This example demonstrates how to display an alternate text for an image. The "alt" attribute tells the reader what he or she is missing on a page if the browser can't load images. It is a good practice to include the "alt" attribute for each image on a page.
Make a hyperlink of an image
This example demonstrates how to use an image as a link.
Create an image map
This example demonstrates how to create an image map, with clickable regions. Each of the regions is a hyperlink.
Turn an image into an image map
This example demonstrates how to turn an image into an image map. You will see that if you move the mouse over the image, the coordinates will be displayed on the status bar.

Image Tags
Tag Description

Defines an image

Defines an image map

Defines a clickable area inside an image map


Background In HTML

A good background can make a Web site look really great.

Examples
Good background and text color
An example of a background color and a text color that makes the text on the page easy to read.
Bad background and text color
An example of a background color and a text color that makes the text on the page difficult to read.
(You can find more examples at the bottom of this page)

Backgrounds
The tag has two attributes where you can specify backgrounds. The background can be a color or an image.
Bgcolor
The bgcolor attribute specifies a background-color for an HTML page. The value of this attribute can be a hexadecimal number, an RGB value, or a color name:



The lines above all set the background-color to black.
Background
The background attribute specifies a background-image for an HTML page. The value of this attribute is the URL of the image you want to use. If the image is smaller than the browser window, the image will repeat itself until it fills the entire browser window.


The URL can be relative (as in the first line above) or absolute (as in the second line above).
Note: If you want to use a background image, you should keep in mind:
• Will the background image increase the loading time too much?
• Will the background image look good with other images on the page?
• Will the background image look good with the text colors on the page?
• Will the background image look good when it is repeated on the page?
• Will the background image take away the focus from the text?

Basic Notes - Useful Tips
The bgcolor, background, and the text attributes in the tag are deprecated in the latest versions of HTML (HTML 4 and XHTML). The World Wide Web Consortium (W3C) has removed these attributes from its recommendations.
Style sheets (CSS) should be used instead (to define the layout and display properties of HTML elements).

More Examples
Good background image
An example of a background image and a text color that makes the text on the page easy to read.
Good background image 2
An example of a background image and a text color that makes the text on the page easy to read.
Bad background image
An example of a background image and a text color that makes the text on the page very difficult to read.

Computer Joke
Support: "Type dir, space, a, colon."
Customer: "With a space after 'space'?"

HTML - Forms & Inputs

HTML Forms & Inputs

HTML Forms are used to select different kinds of user input.

Examples
Text fields
This example demonstrates how to create text fields on an HTML page. A user can write text in a text field.
Password fields
This example demonstrates how to create a password field on an HTML page.
(You can find more examples at the bottom of this page)

Forms
A form is an area that can contain form elements.
Form elements are elements that allow the user to enter information (like text fields, textarea fields, drop-down menus, radio buttons, checkboxes, etc.) in a form.
A form is defined with the

tag.






Input
The most used form tag is the tag. The type of input is specified with the type attribute. The most commonly used input types are explained below.
Text Fields
Text fields are used when you want the user to type letters, numbers, etc. in a form.

First name:



Last name:


How it looks in a browser:
First name:
Last name:
Note that the form itself is not visible. Also note that in most browsers, the width of the text field is 20 characters by default.
Radio Buttons
Radio Buttons are used when you want the user to select one of a limited number of choices.

Male


Female

How it looks in a browser:
Male
Female
Note that only one option can be chosen.
Checkboxes
Checkboxes are used when you want the user to select one or more options of a limited number of choices.

I have a bike:



I have a car:



I have an airplane:


How it looks in a browser:
I have a bike:
I have a car:
I have an airplane:

The Form's Action Attribute and the Submit Button
When the user clicks on the "Submit" button, the content of the form is sent to another file. The form's action attribute defines the name of the file to send the content to. The file defined in the action attribute usually does something with the received input.
method="get">
Username:



How it looks in a browser:
Username:
If you type some characters in the text field above, and click the "Submit" button, you will send your input to a page called "html_form_action.asp". That page will show you the received input.

More Examples
Checkboxes
This example demonstrates how to create check-boxes on an HTML page. A user can select or unselect a checkbox.
Radio buttons
This example demonstrates how to create radio-buttons on an HTML page.
Simple drop down box
This example demonstrates how to create a simple drop-down box on an HTML page. A drop-down box is a selectable list.
Another drop down box
This example demonstrates how to create a simple drop-down box with a pre-selected value.
Textarea
This example demonstrates how to create a text-area (a multi-line text input control). A user can write text in the text-area. In a text-area you can write an unlimited number of characters.
Create a button
This example demonstrates how to create a button. On the button you can define your own text.
Fieldset around data
This example demonstrates how to draw a border with a caption around your data.
Form Examples
Form with input fields and a submit button
This example demonstrates how to add a form to a page. The form contains two input fields and a submit button.
Form with checkboxes
This form contains three checkboxes, and a submit button.
Form with radio buttons
This form contains two radio buttons, and a submit button.
Send e-mail from a form
This example demonstrates how to send e-mail from a form.

Form Tags
Tag Description

Defines a form for user input

Defines an input field